package com.sky.service.impl;

import ch.qos.logback.classic.util.LogbackMDCAdapter;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.apache.http.MessageConstraintException;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.security.auth.login.LoginException;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {
    //微信服务地址
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
     public User wxLogin(UserLoginDTO userLoginDTO)

     {
         //调用微信小程序接口，获得openid
         Map<String, String> map = new HashMap<>();
         map.put("appid",weChatProperties.getAppid());
         map.put("secret",weChatProperties.getSecret());
         map.put("js_code",userLoginDTO.getCode());
         map.put("grant_type","authorization_code");
         String json=HttpClientUtil.doGet(WX_LOGIN,map);
         JSONObject jsonObject = JSON.parseObject(json);
         String openid = jsonObject.getString("openid");
         //如果openid为空，则需要抛出异常
         if (openid == null)
         {
             throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
         }
         User user = userMapper.getByOpenid(openid);

         //如果登录失败抛出异常
         //判断当前用户是否为新用户
         if (user ==null)
         {
              user = User.builder()
                     .openid(openid)
                     .createTime(LocalDateTime.now())
                     .build();
              userMapper.insert(user);
         }
         //如果用户是新用户，则注册openid进行登录
         return user;
     }
}
